Question: Who is the member of sports team of John Charles who started at 1950-1-1?
Paraphrase: Give me the name of the member of sports team of John Charles who started at 1950-1-1?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q312404 p:P54 ?s . ?s ps:P54 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1950')) }